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Dangerous period during pregnancy. Dangerous periods during pregnancy from a to z

Without exception, all expectant mothers should know that directly during pregnancy there are really strictly defined time periods during which the risks of terminating the current pregnancy may increase. These are the very ones that in modern medicine are called the most dangerous weeks, since they can significantly increase the risk of miscarriage for those pregnant women who are initially in any of the risk groups. And that is why an urgent, and therefore timely appeal to the attending physician for pregnancy management is really extremely important to carry out precisely at the earliest stage of pregnancy. Next, we will take a closer look at those most incredibly dangerous periods and all the signs characteristic of them, when an interruption of the current pregnancy can actually occur.

First trimester of pregnancy

One of the first dangerous periods is considered to be the period that occurs approximately from 14 to 21 days of pregnancy. Moreover, very many women during this period of time may not even be aware of the onset of their “ interesting position", since in the first weeks, usually occurs, only attachment to the walls of the uterine mucosa gestational sac. In the event that a woman initially had some inflammatory process endometrium, or there may be other pathological changes in the uterus - the introduction of the fetal egg simply does not occur. Besides, the real reason such early miscarriage such existing diseases as: ordinary or large postoperative scars directly on the walls of the uterus may well serve. As well as all chromosomal or genetic abnormalities in the development of the embryo itself, they are also able to actively prevent the introduction of the fetal egg into the walls of the uterus.

The second of the most dangerous periods of the first trimester is the period from 8 to 12 weeks of pregnancy. It is during this period that growth and further usually occur, but the main reason for the occurrence of miscarriages at this time is sharp hormonal disorders that simply prevent it normal growth and development accordingly.

Second trimester of pregnancy

Further, in the second trimester of the current pregnancy, the most dangerous of all periods is considered to be the period from 18 to 22 weeks of the current pregnancy, because it is at this time that a rather active and most important fast growth uterus in size.

During this period, the risk of developing such dangerous conditions as:

  • incorrect location of the placenta itself.
  • Risks of emergence of new infectious diseases.
  • A sharply weakened position of the cervix itself.

And, of course, all of these diseases may well lead to spontaneous miscarriage. And that is why, a timely appeal to doctors for the purpose of diagnosing at the slightest ailment in a pregnant woman is truly extremely important, and precisely in this dangerous period of pregnancy.

Third trimester of pregnancy

Usually, it is in the third trimester of the current pregnancy that the most dangerous of all weeks are the days between 28 and 32 weeks of pregnancy. The main, and sometimes death in this case, the fetus are such most dangerous conditions How:

  • Strongest.
  • Premature aging and even placental abruption.
  • Acute insufficiency of the placenta.

At the same time, it is extremely important to take into account that children born during this period are usually considered premature and will require especially scrupulous and careful care from doctors and parents in the future.

Based on the foregoing, we will make a simple conclusion that timely registration of pregnancy and at the same time strict adherence to all key recommendations doctors will definitely be able to help you avoid all these extremely dangerous periods of pregnancy and become the happiest mother of the healthiest and strongest baby in the future!

Expecting a baby is an exciting period that expectant mothers go through. It is filled with pleasant chores and anticipation of the happy event in life - the birth of a child. As soon as a woman finds out that she will soon give this world a new person, she usually thinks that now it is time to take care not only of herself, but also of the life that has arisen inside, and it is necessary to make adjustments to the lifestyle that will benefit mother and baby.

Dangers for the development of pregnancy

Most conscious expectant mothers, having barely learned about their situation, pay more attention to the diet, the right way life and do everything so that the baby is born healthy. However, every woman needs to know the information that is dangerous weeks pregnancies in which you need to monitor your body even more closely in order to minimize the threat of miscarriage or premature birth. From the materials of this article, you will get information about what are the dangerous periods of pregnancy by weeks, and how you can protect yourself from negative consequences as much as possible.

In conditions modern life, women are exposed to certain dangers. Improper nutrition, stress, poor ecology - all this does not benefit the pregnant woman, and any infectious diseases that a woman suffers while waiting for a child can carry a threat of termination of pregnancy. In all trimesters, doctors identify periods when the risk of miscarriage is higher.


Most dangerous trimester is the first, it lasts the first twelve weeks of pregnancy at this time the unborn child is called an embryo, and from the second trimester - a fetus, and the probability of a miscarriage at this time is three times higher than in the rest. There are reasons for this. It is in the first weeks that the baby's organs are laid. Around the beginning of the third week, the embryo implants into the uterine wall in order to continue its growth and development here. Then the beginnings appear future umbilical cord, amniotic sac and placenta.

Around the beginning of the fifth week, the spine and heart begin to form. Mom often experiences discomfort at this time: she feels sick, she feels a breakdown. During this period, a woman should sleep well.

Under the influence of adverse factors, fetal malformations may appear: from the second week, malformations of the brain, and the heart - from the third to seventh weeks.

The most dangerous weeks of pregnancy in the first trimester:

  1. Beginning of the third week. This is the period of attachment of the embryo to the wall of the uterus.
  2. eighth to twelfth weeks. During this period, the hormonal background of a woman changes especially intensively, and hormonal disbalance can lead to very negative consequences.

In addition to the natural processes characteristic of the body of a pregnant woman, which can provoke a miscarriage, there are still very hazards, provoking an unfavorable outcome of pregnancy:

  1. . Rubella is one of the most dangerous infections for pregnant women.
  2. Taking some medicines, especially hormonal, as well as antibiotics and antidepressants. Some herbs are also dangerous, such as senna.
  3. X-rays.

According to statistics, 25% of all fertilized eggs do not implant in the uterus and die. In this case, many women do not yet suspect that they have become pregnant.

Thus, we see what is extremely important for the unborn child, and a pregnant woman should try not to expose herself to harmful factors so as not to provoke undesirable consequences. By the beginning of the second trimester, the size of the embryo will be approximately 6 cm.


Following the first trimester comes the second, which lasts from the thirteenth to the twenty-fourth week. This is usually the most pleasant period of pregnancy, since the lethargy of the first trimester has already receded, but the stomach is not yet as impressive as in the third trimester, which allows the woman not to feel constrained. The laying of the organs of the unborn child ends by the beginning of the sixteenth week.

In a woman's body continue hormonal changes. During this period, the vaginal intensify, which can contribute to the appearance of infection. That is why you should monitor the color, consistency, smell and intensity of the discharge, and if you notice any alarming changes or itching, then it is better to consult a doctor, as this may indicate thrush, bacterial vaginosis or even a leak amniotic fluid.

Colds should, if possible, be avoided throughout pregnancy.

There are periods when it is extremely undesirable to get sick:

  1. Sixteenth to seventeenth weeks of pregnancy. At this time, it can adversely affect the bone tissue of the unborn child.
  2. Nineteenth to twentieth weeks. At this time, eggs are actively formed in future girls.
  3. Eighteenth-twenty-second weeks. The uterus of the future girl is actively growing.

At this time, a pregnant woman may experience lower back pain, heartburn, she may begin. During this period, there is a risk of softening of the cervix and the risk that the placenta will change its position. If you feel pain in your stomach, then visit your doctor as soon as possible, as such a symptom is very dangerous.

In order for the second trimester to proceed safely, follow vaginal discharge and try not to get sick with infectious diseases, and if it was not possible to protect yourself, be sure to follow all the doctor's instructions.


Completes pregnancy, which lasts from the twenty-fifth to the thirty-ninth week. The baby will be born very soon. The belly of a woman at this time becomes maximum dimensions, which contributes to the appearance of shortness of breath, insomnia, excessive fatigue. Gained weight can be reflected in the musculoskeletal system. The body of a pregnant woman is already intensively preparing for childbirth.

The most important thing in this trimester is to prevent premature birth. The dangerous period in the third trimester is between the twenty-eighth and thirty-second weeks. Preterm labor in these weeks may begin due to a malfunction in hormonal background, placental abruption or untimely opening of the cervix, as well as late toxicosis.

In this article, we looked at the dangerous weeks of pregnancy and found out what each trimester is fraught with potential hazards. For the first trimester there are the most dangerous weeks during pregnancy, since at this time the embryo begins its development and organs appear in it. During this period, there is a possibility of fetal defects, miscarriage. Second- dangerous vaginal infections and childbirth that occur ahead of time. third trimester also carries a threat of premature birth and the birth of a premature baby.

So that the pregnancy proceeds smoothly and ends with the birth healthy child, expectant mother you should listen to your feelings, lead a measured lifestyle, exclude all harmful factors that can provoke a miscarriage or childbirth earlier due date, and in case of any suspicious changes, you should immediately visit your doctor.

All expectant mothers, without exception, are worried about how their pregnancy will proceed, because they are faced with important questions: which weeks of pregnancy are the most dangerous, what to expect, how to eat and more.

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First trimester of pregnancy

During the first three months of the “interesting situation”, the expectant mother may not feel changes in her body, but this period is the most fundamental for all the months of bearing a child.

  1. The first weeks after the conception of the baby occurs incubation period, at 2-3 weeks, which is accompanied by the attachment of the egg with the fetus to the uterine mucosa. The criticality lies in the fact that a pregnant girl in these dangerous weeks of the first trimester does not yet know about her position, and some of the actions that she performs can adversely affect the formation and attachment of the fetal egg. This could be smoking, alcohol, drugs, physical labor, or emotional stress. Some diseases of a woman leading to a miscarriage are also dangerous: uterine fibroids, scars left after operations.
  2. From 4 to 6 weeks, the foundations of the baby's organs begin to form. Therefore, during this time period, not only miscarriages are possible, but also the development of pathologies of the unborn baby. It is important to try to avoid any bad habits, adjust emotional background, stop physical exercise.
  3. And from 8 to 12 weeks, the third dangerous period occurs in the first trimester of pregnancy, since the placenta is formed in the girl - the protective shell of the fetal egg.

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Critical situations in the second trimester

After the first three months, it seems to you that the critical weeks and the most dangerous periods of pregnancy have passed, but for the sake of the health of your unborn child, you should not relax. In the second trimester of pregnancy, there are also threats - dangerous weeks:

  • most often, various deviations in the development of the baby are observed from 18 to 22 weeks, as they arise as a result of the disease of the expectant mother due to various infections, including sexually transmitted infections: chlamydia, herpes - all these diseases lead to infection of the fetus or to premature birth;
  • ultrasound during these dangerous weeks of pregnancy reveals the wrong location of the placenta, and the gynecologist can detect a weakening of the cervix.

All of the above threats can lead to miscarriage, death of the fetus in the womb, or, if infectious diseases, the development of pathologies of the baby. Expectant mothers should be very careful about their health, if you suspect unhealthy state contact your doctor immediately.

In the second trimester of pregnancy, regardless of the week, it is especially important to avoid physical impacts on the fetus: dangerous blows, falls, which often occur in winter on slippery ice. Avoid high heels, hairpin, short clothes in the cold season.

In the third week of pregnancy

Third quarter

Already more than half of the way to meeting your baby has been completed, the last third of your expectation remains. In the third trimester, with premature birth, there is a great chance of saving your crumbs, since modern medicine has gone far ahead in matters of nursing premature babies (provided that the baby weighs more than 500 grams, and your term is at least 22 weeks). So, if the previous weeks of pregnancy were accompanied by dangerous situations for you, then in some way you can breathe a sigh of relief.

In the last third of childbearing, active development occurs internal organs future child, preparing them for independent functioning. The most dangerous moments of pregnancy in the third trimester are from 28 to 32 weeks:

  • the development of late toxicosis, called preeclampsia, is accompanied by swelling of the legs, increased pressure, signs of nausea appear, which adversely affects the development of the fetus;
  • detachment of the placenta, which may result in bleeding and premature birth, it is also possible early aging protective layer of the baby;
  • a large amount of amniotic fluid recognized as abnormal;
  • fetoplacental insufficiency - disturbances in the functions of the placenta, which will lead to oxygen starvation fetus, and as a result, to a delay in the development of the baby.

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Dangerous periods after IVF

If your position is positive result in vitro fertilization (IVF), then you probably already know that with this method of conception, the possibility of having not one, but two children is very high. Hence the risk, because it is difficult to carry and give birth to one baby, and if you have two of them, then the responsibility and complexity of the periods only increase.

In addition, it is important to know the following difficulties that arise after IVF:

  • increased risk of early miscarriage: most often, to minimize such cases, gynecologists prescribe to pregnant girls hormonal preparations;
  • the causes of infertility of the expectant mother can also affect the very course of pregnancy, the appearance of genetic abnormalities in the child.

All this can be prevented close attention to their health, condition, as well as an immediate trip to the doctor or his call in case of the slightest ailment.

The very first weeks of pregnancy after IVF are the most dangerous. The fetus needs to gain a foothold in the woman’s egg, “grow” with the placenta, but everything is aggravated by the very process of maintaining pregnancy: taking hormones, in a non-standard way conception (population of eggs), which can also help reduce corpus luteum such cells. And also the woman's body itself, more precisely the immune system, can reject the baby, forming antibodies. Such conditions are accompanied by detachment of the placenta, contribute to the appearance of bleeding and miscarriages.

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That is why all the actions of doctors aimed at preserving the fetus begin from the very first week of conception and are carried out with more powerful estrogen and progestin drugs.

Rules of conduct at critical moments

As you can see for yourself, there are dangerous weeks during pregnancy in each of the trimesters, and the fact remains that there is no definite answer which week of pregnancy is the most dangerous, because with all the adverse outcomes, the life of your unborn child will be in jeopardy. The goal of every girl who already at the first signs of pregnancy feels maternal instinct is the birth of healthy and strong offspring, so it is very important to take care not only of your health, but also emotional state. Remember that your mood is transmitted to the unborn baby and it is very important that it be positive.

What periods of pregnancy are the most dangerous, what they threaten and how to behave correctly in a given situation at a given time? Under these periods, doctors understand the weeks of gestation, when the likelihood of spontaneous miscarriage or premature birth is highest. There are such weeks common for all expectant mothers and individually for each.

The most dangerous periods of pregnancy are 4, 8, 12 weeks, that is, part of the first trimester. These are the weeks when menstruation would have to begin if not for pregnancy. During these weeks, in women, detachment of the chorion or ovum most often occurs. This pathology appears pulling pains in the lower abdomen and (or) bleeding from the genital tract. Treatment consists in taking antispasmodics and progesterone preparations - Duphaston orally or Utrozhestan vaginally. It is important that the detachment does not become larger, and the embryo maintains a rhythmic heartbeat. Treatment of the threat of miscarriage is carried out in a hospital. What is dangerous to do in early pregnancy this case? Naturally, to have sex, in one way or another, provoke uterine hypertonicity. With placental abruption with bleeding, women are prescribed bed rest.

Dangerous periods of pregnancy by weeks can be longer. So often bloody issues observed during the second trimester of pregnancy, if the chorion (placenta) overlaps internal os(cervix) or located very low.

To cure the presentation or low location of the placenta will not work. But there is hope that she, along with the uterus, will rise higher. The probability of such a favorable outcome is especially high if the placenta is located on the anterior wall of the uterus. But while it is low, a woman is recommended sexual rest. With physical activity, you also need to be careful. And in case of bleeding, immediately consult a doctor or immediately call an ambulance.

The most dangerous periods of pregnancy in terms of late miscarriage is 16-22 weeks. In some women, during this period, the length of the cervix begins to sharply decrease, the internal os opens. This pathology is called isthmic-cervical insufficiency. It may be due to different reasons, both hormonal and mechanical, associated with damage to the cervix that was obtained before pregnancy, for example, as a result of the opening of the cervix during an abortion.

And especially often isthmic-cervical insufficiency is diagnosed in women bearing two or three fetuses. Apparently due to heavy load to the neck area. In twin pregnancy, dangerous periods are of particular importance to the doctor. Such future mothers usually do an ultrasound with a measurement of the length of the cervix more often. And if the cervix is ​​short and the gestation period is relatively short, stitches are put on it. And in other cases, a pessary ring is put on the cervix.

The so-called uterine hypertonicity, characterized not only by uterine calculus, but also painful sensations, can lead to the opening of the cervix, and sometimes the discharge of amniotic fluid. Hypertonicity is diagnosed in different dates pregnancy, but more often at 16-20 weeks. And many doctors consider this period to be critical, since in the event of a birth, such a child cannot be saved. And the women in given period often end up in the hospital. There they are given droppers with magnesia, injections of "No-shpy" and "Papaverine". Although in fact, hypertonicity carries some risk only in the case of a short or softened cervix. And to relieve hypertension, there are various non-drug methods.

After eco, the dangerous periods of pregnancy are about the same. But moms-to-be don't have to wait these weeks with trepidation. You need to try to enjoy the pregnancy, not to look for non-existent problems in yourself and not to try on other people's situations. Then the hypertonicity will disturb less often. After all, all diseases are from nerves, as they say. And in relation to pregnant women, this statement is especially relevant.

Pregnancy is an unforgettable time in every woman's life. The announcement of the onset of pregnancy is, of course, good news. But at the same time, every woman understands that now she is standing in her own everyday life make adjustments. After all, now she is responsible not only for her health, but also for the health of the unborn baby. In the modern rhythm of life, there are many factors potentially dangerous for a pregnant woman: poor ecology, malnutrition forced physical activity. chronic diseases and even stress can provoke a miscarriage. In each trimester, doctors identify critical periods when every expectant mother should be especially attentive to health. Let's consider each of them.

Dangerous weeks of the first trimester

There is an opinion that the first three months of pregnancy are the most dangerous, since the risk of miscarriage is three times higher in the first trimester. During this period, organs are formed in the unborn baby. Of course, such an important process for a woman cannot go unnoticed. It is marked by nausea, lethargy, fatigue and frequent urination in a pregnant woman. There are three critical periods.

The first - from 14 to 21 days of pregnancy, when future mommy may not be aware that he is in an "interesting" position. At this time, the fertilized egg is introduced into the mucous membrane of the uterine wall.

This period may vary if one of the following factors exists:

  • In the structure of the uterus there are anomalies or scars after operations (after caesarean section);
  • The embryo has genetic and chromosomal abnormalities;
  • A pregnant woman is stressed;
  • Infectious and viral diseases in the mother;
  • Smoking and drinking alcohol.

Under the influence of these factors, miscarriage, which will be manifested by bleeding similar to menstruation.

In the period from 4 to 6 weeks, the laying of vital important organs embryo. Many factors can affect the formation of the organs of the fetus, so some doctors also define this period as critical.

From the 8th to the 12th week of pregnancy, growth and development occurs. children's place", placenta. In some women, a hormonal surge occurs in the body, which can lead to wrong development placenta and, as a result (in 75% of cases), to miscarriage or miscarriage.

At this time, you should not take antibiotics, hormonal drugs, antidepressants. It is also undesirable to take some herbs, such as comfrey, hay, juniper, coltsfoot, etc. It is recommended to pay attention to the intestinal microflora and get enough sleep. It is not recommended to be under the scorching rays of the sun.

According to statistics, 25% of all fertilized eggs live for about 4 weeks and die without infiltrating the uterine mucosa. At this time, women may not even suspect that conception has occurred.

Second trimester: what to watch out for

The second semester is the period from 13 to 24 weeks of pregnancy. This is the “golden mean”, when toxicosis, nausea and headaches recede, physical education for pregnant women, outdoor walks are shown.

Hormonal changes in the body continue, often characterized by vaginal discharge. The risk of infections increases. Therefore, any changes in secretions require vigilant attention in this trimester: density, color, smell, burning.

The female body is susceptible to colds throughout pregnancy, however, at 15–16 weeks, a cold can affect the formation of the bone tissue of the embryo, and at 19–20 weeks of pregnancy, the formation of eggs in the future girl.

The pregnancy calendar is known to every expectant mother, but which weeks you need to pay attention to Special attention not everyone knows

Nevertheless critical period in the second trimester of pregnancy are 18 - 22 weeks. At this time, the uterus is actively growing, manifested by such unpleasant phenomena as heartburn, constipation and back pain. There is a risk of premature termination of pregnancy for the following reasons:

  • infectious disease of the expectant mother;
  • weakening of the cervix;
  • misplaced placenta.

Summing up, in the second trimester it is imperative to pay special attention to secretions and it is necessary to treat infections under the supervision of a doctor.

Dangers of the third trimester

In the third trimester of pregnancy, most women experience increased fatigue, shortness of breath, and they do not sleep well. The main dangers that await a woman during this period of pregnancy are associated with premature birth. Critical in the third trimester include the period from 28 to 32 weeks of pregnancy. At this time, the risk of premature birth increases significantly for the following reasons:

  • hormonal disruptions;
  • early aging and placental abruption;
  • late preeclampsia;
  • insufficiency of the placenta.

Characteristic signs that pregnancy is under threat will be aching and growing pain in the lower abdomen, fever, and bleeding.

So, as we have already decided, in each trimester of pregnancy there are “critical” weeks. In the first, it is the likelihood of developing malformations in the fetus and the threat of miscarriage. In the second - the risk of developing vaginal infections and premature birth. In the third - birth premature baby. In order to avoid the occurrence complications for their health, and for the health of the baby, you need to register as early as possible in antenatal clinic and follow the instructions of the doctors. Be attentive to yourself, because not only your health, but also the health of your unborn child depends on you!